• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

相似文献

1
Change in T2* measurements of placenta and fetal organs during Braxton Hicks contractions.宫缩期间胎盘和胎儿器官 T2* 测量值的变化。
Placenta. 2022 Oct;128:69-71. doi: 10.1016/j.placenta.2022.08.011. Epub 2022 Aug 29.
2
Fetal Doppler velocimetry in the internal carotid and umbilical artery during Braxton Hicks' contractions.在Braxton Hicks宫缩期间对胎儿颈内动脉和脐动脉进行多普勒血流测定。
Early Hum Dev. 1992 Aug;30(1):33-40. doi: 10.1016/0378-3782(92)90084-t.
3
Placental MRI: Effect of maternal position and uterine contractions on placental BOLD MRI measurements.胎盘 MRI：母体体位和子宫收缩对胎盘 BOLD MRI 测量的影响。
Placenta. 2020 Jun;95:69-77. doi: 10.1016/j.placenta.2020.04.008. Epub 2020 Apr 22.
4
Uteroplacental Doppler velocimetry during Braxton Hicks' contractions.Braxton Hicks宫缩期间的子宫胎盘多普勒血流测定法。
Gynecol Obstet Invest. 1992;34(3):155-8. doi: 10.1159/000292750.
5
Braxton-Hicks contractions and fetal breathing movements.布拉克斯顿-希克斯宫缩和胎儿呼吸运动。
Aust N Z J Obstet Gynaecol. 1982 Nov;22(4):212-4. doi: 10.1111/j.1479-828x.1982.tb01447.x.
6
Braxton Hicks' contractions and motor behavior in the near-term human fetus.近足月人类胎儿的布拉克斯顿·希克斯宫缩与运动行为
Am J Obstet Gynecol. 1987 Mar;156(3):543-9. doi: 10.1016/0002-9378(87)90047-0.
7
Dynamics of T2* and deformation in the placenta and myometrium during pre-labour contractions.分娩前宫缩时胎盘和子宫肌的 T2* 弛豫和变形的动力学。
Sci Rep. 2022 Nov 3;12(1):18542. doi: 10.1038/s41598-022-22008-3.
8
Effects of Braxton-Hicks contractions on fetal heart rate variations in normal and growth-retarded fetuses.布拉克斯顿-希克斯宫缩对正常胎儿和生长受限胎儿心率变化的影响。
Gynecol Obstet Invest. 1994;38(3):177-82. doi: 10.1159/000292474.
9
Braxton Hicks Contractions布拉克斯顿·希克斯宫缩
10
An MRI approach to assess placental function in healthy humans and sheep.一种评估健康人类和绵羊胎盘功能的 MRI 方法。
J Physiol. 2021 May;599(10):2573-2602. doi: 10.1113/JP281002. Epub 2021 Mar 29.

引用本文的文献

1
Real-time fetal brain and placental T2* mapping at 0.55T MRI.0.55T磁共振成像下的实时胎儿脑和胎盘T2* 成像
Magn Reson Med. 2025 Aug;94(2):615-624. doi: 10.1002/mrm.30497. Epub 2025 Mar 10.
2
Rapid, High-resolution and Distortion-free Mapping of Fetal Brain using Multi-echo Radial FLASH and Model-based Reconstruction.使用多回波径向快速低角度激发序列和基于模型的重建技术对胎儿大脑进行快速、高分辨率且无失真的映射。
ArXiv. 2025 Jan 7:arXiv:2501.00256v2.
3
T* relaxometry of fetal brain structures using low-field (0.55T) MRI.使用低场（0.55T）MRI对胎儿脑结构进行T* 弛豫测量法。
Magn Reson Med. 2025 May;93(5):1942-1953. doi: 10.1002/mrm.30409. Epub 2024 Dec 31.
4
The human placenta project: Funded studies, imaging technologies, and future directions.人类胎盘计划：资助研究、成像技术及未来方向。
Placenta. 2023 Oct;142:27-35. doi: 10.1016/j.placenta.2023.08.067. Epub 2023 Aug 21.
5
Low-Field Combined Diffusion-Relaxation MRI for Mapping Placenta Structure and Function.低场联合扩散-弛豫磁共振成像用于胎盘结构和功能成像
medRxiv. 2023 Jun 10:2023.06.06.23290983. doi: 10.1101/2023.06.06.23290983.
6
Physiological assessment of the fetal body using MRI: current uses and potential directions.利用 MRI 对胎儿身体进行生理学评估：当前用途和潜在方向。
Br J Radiol. 2023 Jul;96(1147):20221024. doi: 10.1259/bjr.20221024. Epub 2023 Jun 13.
7
Assessing within-subject rates of change of placental MRI diffusion metrics in normal pregnancy.评估正常妊娠胎盘 MRI 扩散指标的个体内变化率。
Magn Reson Med. 2023 Sep;90(3):1137-1150. doi: 10.1002/mrm.29665. Epub 2023 May 15.

本文引用的文献

1
Placental MRI: Effect of maternal position and uterine contractions on placental BOLD MRI measurements.胎盘 MRI：母体体位和子宫收缩对胎盘 BOLD MRI 测量的影响。
Placenta. 2020 Jun;95:69-77. doi: 10.1016/j.placenta.2020.04.008. Epub 2020 Apr 22.
2
Individual variation in simulated fetal SAR assessed in multiple body models.在多个身体模型中评估的模拟胎儿比吸收率的个体差异。
Magn Reson Med. 2020 Apr;83(4):1418-1428. doi: 10.1002/mrm.28006. Epub 2019 Oct 18.
3
Effect of uterine contractions on fetal heart rate in pregnancy: a prospective observational study.孕期子宫收缩对胎儿心率的影响：一项前瞻性观察研究。
Acta Obstet Gynecol Scand. 2016 Oct;95(10):1129-35. doi: 10.1111/aogs.12949.
4
Reduced placental oxygenation during subclinical uterine contractions as assessed by BOLD MRI.通过血氧水平依赖性功能磁共振成像（BOLD MRI）评估发现，亚临床子宫收缩期间胎盘氧合减少。
Placenta. 2016 Mar;39:16-20. doi: 10.1016/j.placenta.2015.12.018. Epub 2016 Jan 5.
5
User-guided 3D active contour segmentation of anatomical structures: significantly improved efficiency and reliability.用户引导的解剖结构三维主动轮廓分割：显著提高效率和可靠性。
Neuroimage. 2006 Jul 1;31(3):1116-28. doi: 10.1016/j.neuroimage.2006.01.015. Epub 2006 Mar 20.
6
INFLUENCE OF UTERINE CONTRACTIONS ON THE UTEROPLACENTAL BLOOD FLOW AT TERM.
Am J Obstet Gynecol. 1965 Sep 1;93:44-57. doi: 10.1016/0002-9378(65)90293-0.
7
EFFECT OF UTERINE CONTRACTIONS ON THE HUMAN UTEROPLACENTAL BLOOD CIRCULATION: AN ARTERIOGRAPHIC STUDY.子宫收缩对人体子宫胎盘血液循环的影响：一项动脉造影研究。
Am J Obstet Gynecol. 1964 Aug 1;89:881-90. doi: 10.1016/0002-9378(64)90057-2.
8
Serial and cineradioangiographic visualization of maternal circulation in the primate (hemochorial) placenta.灵长类（血绒毛膜型）胎盘母体循环的系列及电影血管造影可视化。
Am J Obstet Gynecol. 1963 May 15;86:213-25. doi: 10.1016/0002-9378(63)90434-4.
9
Braxton-Hicks contractions can alter uteroplacental perfusion.布拉克斯顿-希克斯宫缩会改变子宫胎盘灌注。
Ultrasound Obstet Gynecol. 1991 Jan 1;1(1):46-9. doi: 10.1046/j.1469-0705.1991.01010046.x.
10
Uterine and umbilical circulation during the oxytocin challenge test.
Ultrasound Obstet Gynecol. 1996 Oct;8(4):247-51. doi: 10.1046/j.1469-0705.1996.08040247.x.

宫缩期间胎盘和胎儿器官 T2* 测量值的变化。

Change in T2* measurements of placenta and fetal organs during Braxton Hicks contractions.

机构信息

Fetal-Neonatal Neuroimaging & Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.

Fetal-Neonatal Neuroimaging & Developmental Science Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.

出版信息

Placenta. 2022 Oct;128:69-71. doi: 10.1016/j.placenta.2022.08.011. Epub 2022 Aug 29.

DOI:10.1016/j.placenta.2022.08.011
PMID:36087451
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9674925/
Abstract

Maternal-placental perfusion can be temporarily compromised by Braxton Hicks (BH) uterine contractions. Although prior studies have employed T2* changes to investigate the effect of BH contractions on placental oxygen, the effect of these contractions on the fetus has not been fully characterized. We investigated the effect of BH contractions on quantitative fetal organ T2* across gestation together with the birth information. We observed a slight but significant decrease in fetal brain and liver T2* during contractions.

摘要

母体-胎盘灌注可因布拉克斯顿·希克斯（Braxton Hicks，BH）子宫收缩而暂时受到影响。尽管先前的研究已经采用 T2变化来研究 BH 收缩对胎盘氧合的影响，但这些收缩对胎儿的影响尚未得到充分描述。我们研究了 BH 收缩对整个孕期胎儿定量器官 T2的影响，以及出生信息。我们观察到胎儿大脑和肝脏 T2*在收缩期间略有但显著降低。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a4ef/9674925/038bc24f5fd9/nihms-1846796-f0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a4ef/9674925/038bc24f5fd9/nihms-1846796-f0001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a4ef/9674925/038bc24f5fd9/nihms-1846796-f0001.jpg